The Delta II Rocket That Gave Us GPS and the Mars Rovers Retires

Vulcan continues path to its maiden launch as ULA turns 15

United Launch Alliance - Wikipedia

Delta Reusable Rocket, Payload Delivery & Space Exploration

Rocks, Rockets and Robots: The Plan to Bring Mars Down to Earth

Meet the Delta Rocket Family of the United Launch Alliance

Delta II, Military Wiki

Delta II Rocket — Electron Losses and Fields Investigation

Boeing Delta II Keeps GPS Constellation Healthy

Delta II - Wikipedia

Delta II Rocket — Electron Losses and Fields Investigation

Delta II: Public exhibit honors legendary rocket

Delta II Rocket — Electron Losses and Fields Investigation

Space Shuttle - Wikipedia

Delta II rocket set for final launch with NASA's ICESat-2

The Delta II rocket came, it saw, and for a time it conquered